JPH08336164A - Method for generating image information, method for displaying image and image display system - Google Patents

Abstract

PURPOSE: To improve image quality in the technique for generating a random dot stereogram, etc. CONSTITUTION: A point image information S1 of a sub-picture element unit and the other point image S2 of the sub-picture element unit are determined based on the distance L1 between points to be set by a sub-picture element unit. By averaging the image information on the sub-picture element within a picture element, etc., the image information on each picture element (P1 and P2, for instance) is determined. As a result, because the distance between the points can be controlled in the sub-picture element unit, a stereoscopic image generating a smoothly inclined shaped virtual image can be obtained. When an image display is performed on the display device having the finite number of picture elements, in particular, a large effect is given. When modified images are successively determined from a basic pattern image, an excellent effect can be obtained by making the area where image information becomes the same into the size which is non-integer times as large as that of the picture element.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for generating stereoscopically visible image information, an image display method using the image information, and an image display system.

[0002]

2. Description of the Related Art Conventionally, a random dot stereogram (RD) has been used as a method for generating stereoscopically visible image information.
S), color field stereogram, and other techniques are known. In the random dot stereogram method, a plurality of adjacent modified images are generated from the basic (base) pattern image. At this time, the basic pattern image is formed by randomly arranging images of a predetermined color and a predetermined brightness in units of pixels (pixels, dots). on the other hand,
The color field stereogram method also generates a plurality of adjacent modified images from the basic pattern image, but the basic pattern image is formed by drawing a pattern or the like of a predetermined shape on a pixel-by-pixel basis.

In any of the above methods, the sense of depth of the virtual image generated is determined by the distance between the left eye gazing point and the right eye gazing point. For example, in the stereoscopic view by the intersection method shown in FIG. 12A, the depth value of the virtual image decreases as the distance between the gazing points increases (when the depth value increases toward the back side toward the screen). That is, FIG. 12 (A)
, C1 is a virtual image generated by the pixel A at the right eye gazing point and the pixel B1 at the left eye gazing point, and C2
Is a virtual image generated by the pixel A and the pixel B2 at the left eye gazing point. The distance between A and B2 is A and B1.
Since it is larger than the interval, the depth value of the virtual image C2 is smaller than C1. On the other hand, the stereoscopic view by the parallel method shown in FIG. 12B has the opposite relationship to the case of the crossing method. That is, in FIG. 12B, F1 is a virtual image generated by the pixel D at the left eye gazing point and the pixel E1 at the right eye gazing point, and F2 is the pixel D and the pixel E2 at the right eye gazing point.
Is a virtual image generated by. Since the distance between D and E2 is larger than between D and E1, the depth value of the virtual image F2 is larger than F1. As described above, in the random dot stereogram method or the like, a sense of depth is created by controlling the size of the distance between the gazing points, and a stereoscopically visible image is generated.

[0004]

However, in the conventional method, the size of the distance between the gazing points can be controlled only in units of pixels, and the size is limited to an integral multiple of the pixel size.
Therefore, the possible depth values are discrete values, and there is a problem that the obtained virtual image is hierarchical (stepwise) in the depth direction (see FIG. 6A). This problem does not become so large when an image is created on the assumption that it is printed by a high-resolution printing machine, for example. However, when the obtained image is displayed on a display device (TV, display, etc.) having a finite number of pixels,
This step-like shape is conspicuous and gives the viewer an unnatural feeling. Therefore, a technical issue is how to solve this problem.

The present invention has been made in view of the above problems, and an object of the present invention is to provide an image information generating method and an image information generating method capable of improving the quality of an image generated by a random dot stereogram method or the like. It is to provide a display method and an image display system.

[0006]

In order to solve the above-mentioned problems, the invention of claim 1 is the distance between the gazing points whose size is determined by one of the left-eye and right-eye gazing point image information and the depth information. An image information generation method for generating stereoscopically viewable pixel-unit image information by obtaining the other gazing point image information different from the one, and the one gazing point image information in sub-pixel units, A step of obtaining the other gazing point image information in subpixel units based on the distance between gazing points set in subpixel units, and image information in pixel units from the other gazing point image information in subpixel units And a step of obtaining

The invention according to claim 11 is based on one of the gaze point image information for the left eye and the right eye and the gaze point distance determined by the depth information, and the other gaze point different from the one gaze point image information. An image display system for obtaining image information, generating image information for each stereoscopically visible pixel unit, and displaying the image information on a display device having a finite number of pixels, wherein the one gazing point image information for each subpixel and the subpixel Means for obtaining the other gazing point image information in subpixel units based on the distance between gazing points set in units, and means for obtaining image information in pixel units from the other gazing point image information in subpixel units It is characterized by including and.

According to the first or eleventh aspect of the present invention, the other gazing point image information in subpixel units is obtained based on the distance between gazing points set in subpixel units, and converted into image information in pixel units. To be done. Therefore, the distance between the gazing points can be controlled in units of sub-pixels, and a stereoscopic image for generating a more accurate and smooth virtual image having an inclined shape can be obtained. The present invention can be applied not only to the random dot stereogram / color field stereogram method but also to various stereoscopic image information generation methods.

According to a second aspect of the present invention, a plurality of adjacent modified image information are formed based on the basic pattern image information and the distance between the gazing points whose size is determined by the depth information, and the pixel unit is stereoscopically viewable. An image information generation method for generating image information, the step of converting the basic pattern image information in pixel units into image information in subpixel units,
Based on at least one of the basic pattern image information in subpixel units and the (N−1) th modified image information in subpixel units (N is an integer), and the distance between the gazing points set in subpixel units, The method is characterized by including a step of generating N modified image information and a step of obtaining image information in pixel units from the obtained modified image information in subpixel units.

According to the second aspect of the invention, the N-th modified image in the sub-pixel unit is successively output based on the basic pattern image information, the (N-1) -th modified image, the distance between the gazing points in the sub-pixel unit, and the like. And converted into image information in pixel units. As a result, it is possible to generate a stereoscopic image based on the basic pattern image, and it is possible to obtain a stereoscopic image that generates a more accurate and smooth virtual image having an inclined shape.
As a method of obtaining the image information of the pixel unit from the image information of the sub pixel unit, various methods such as performing γ correction at the time of conversion can be adopted other than the method of obtaining the average value.

According to a third aspect of the present invention, in any one of the first or second aspects, in the step of obtaining the image information in the pixel unit, the average value of the image information of the sub-pixels included in the pixel is calculated as the image in the pixel unit. It is characterized by being information.

According to the invention of claim 3, the image information of the pixel can be obtained as an average value of the image information of all the sub-pixels included in the pixel, for example, image display on a display device having a finite number of pixels. Etc. are possible.

According to a fourth aspect of the present invention, in any one of the second or third aspect, the basic pattern image information is composed of image information in subpixel units, and in the step of obtaining the image information in pixel units, It is characterized in that image information in pixel units is obtained from basic pattern image information in pixel units.

According to the fourth aspect of the present invention, the basic pattern image information is composed of image information in sub-pixel units from the beginning, and a process for converting it into image information in sub-pixel units is unnecessary.

According to a fifth aspect of the present invention, in any one of the second to fourth aspects, the basic pattern image information is formed by randomly arranging images in pixel units or sub-pixel units. .

According to the fifth aspect of the present invention, it is possible to obtain a random dot stereogram image which produces an accurate and smooth virtual image having a slanted shape.

According to a sixth aspect of the present invention, in any one of the second to fourth aspects, the basic pattern image information is formed by drawing a pattern of a predetermined shape in pixel units or sub-pixel units. .

According to the sixth aspect of the present invention, it is possible to obtain a color field stereogram image that produces an accurate and smooth virtual image having an inclined shape.

According to a seventh aspect of the present invention, in any one of the fourth to sixth aspects, the basic feature is such that at least one of a vertical dimension and a horizontal dimension of an area where image information is the same is a non-integer multiple of a pixel dimension. It is characterized in that pattern image information is formed.

According to the invention of claim 7, it is possible to display an image with a uniform brightness even in a display device or the like in which γ correction is not correctly performed.

An eighth aspect of the present invention is characterized in that, in any one of the fourth to sixth aspects, the basic pattern image information is formed so that an area where the image information is the same always extends over a pixel boundary. .

According to the eighth aspect of the present invention, it is possible to display an image with a uniform brightness even in a display device or the like in which the γ correction is not correctly performed.

According to a ninth aspect of the present invention, the image information generated by the image information generating method according to any one of the first to eighth aspects is displayed on a display device having a finite number of pixels.

According to the ninth aspect of the invention, it is possible to display a stereoscopic image for generating a virtual image having an accurate and smooth tilt shape on a display device having a finite number of pixels.

According to a tenth aspect of the present invention, in the ninth aspect,
The image information of a moving image is displayed on the display device.

According to the invention of claim 10, it is possible to obtain a stereoscopically visible moving image and effectively prevent a situation in which the virtual image becomes stepwise depending on the direction of the display object. it can.

[0027]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will be described below with reference to the drawings.

(First Embodiment) FIG. 1 shows a random dot stereogram (hereinafter, R) generated by this embodiment.
An example of an image (called DS) is shown. The RDS image is composed of a basic pattern image and a plurality of (first to fourth) modified images adjacent to each other as shown in FIG. In the basic pattern image, the images are randomly arranged on a pixel-by-pixel basis (pixels of different colors or luminance are arranged randomly). Therefore, even in the modified image generated based on this basic pattern image, it is randomized on a pixel-by-pixel basis. The image is placed in. In order to generate such an RDS image, for example, as shown in FIG. 2, first, a three-dimensional shape to be expressed is prepared. Then, depth information is obtained from this three-dimensional shape. For example, in FIG. 2, the depths of the sphere 10 and the cube 12 are arranged in front of the wall 14, and accordingly, the depth information obtained also represents them. That is, in the present embodiment, the depth value of the object on the front side of the screen is reduced, for example, and the depth value of the object on the rear side is increased, for example (or vice versa). However, when obtaining the depth information, it is not always necessary to prepare a three-dimensional shape as shown in FIG. 2, and the depth information may be directly generated using a predetermined program or the like.

In RDS, as shown in FIG. 1, modified images are successively generated from depth information and a basic pattern image prepared in advance. FIG. 3 shows a conventional method for obtaining a modified image from a basic pattern image. Now, assume that the width of the basic pattern image is 80
Suppose it was a pixel. When obtaining the image information of the modified image, the depth value is first referred to, and the distance between the gazing points is obtained from this value. In RDS, the size of the distance between the gazing points is determined by the depth value.
(See (B)), the distance between gazing points becomes larger for objects on the farther side (those with a large depth value), and the distance between gazing points is smaller for those on the front side (those with a smaller depth value). It becomes (in the crossing method, it becomes the opposite relation). As shown in FIG. 3, the first of the first modified image
The depth value of the pixel is 0 and the distance L between the gazing points
When 1 has 80 pixels, the image information C1 at the position left by 80 pixels is read as shown in FIG. As a result, the image information (color, brightness, etc.) of the first pixel of the first modified image becomes C1. Next, referring to the depth value of the second pixel, it is -1, and the distance between gazing points is 79 pixels. As a result, the image information C3 on the left by 79 pixels is displayed.
Is read out, so that the image information of the second pixel is C3.
Becomes Further, since the distance L3 between the gazing points of the third pixel is 78 pixels, the image information of the third pixel is C5. Similarly, the image information of the fourth, fifth, and sixth pixels is C4 and C, respectively.
The image information of the pixel of the first modified image is obtained in this way, and the image information of the second modified image and the third modified image are sequentially obtained.

As is apparent from the above, in the conventional method, the magnitude of the distance between the gazing points can be controlled only in pixel units. If the distance between the gazing points can be controlled only on a pixel-by-pixel basis, the possible value of the distance to the virtual image is limited accordingly. For example, in FIG. 3, the depth value of the first pixel is set to −0.5, and the corresponding gazing point distance is 7
9.5 Consider the case of an image. In this case, the value of the distance L1 between the gazing points that can be actually taken is either 79 pixels or 80 pixels. Therefore, either the image information C1 of the first pixel or the image information C2 of the second pixel of the basic pattern image is selected as the image information of the first pixel of the first modified image. This means that, even if the depth value is changed in the range of -1 to 0, the distance to the virtual image is 0,
It means that the value corresponds to any one of -1. In this way, since the possible values of the distance to the virtual image are discrete, the obtained virtual image looks like a step (see FIG. 6).
(See (A)).

In this embodiment, in order to solve the above problems,
As shown in FIG. 4, first, an image expressed in pixel units (basic pattern image) is converted into an image in subpixel units. For example, in FIG. 4, one square-shaped pixel is divided into 16 square sub-pixels. However, it is completely arbitrary to divide one pixel into any shape, and the number of divisions may be increased or decreased as compared with the case of FIG. 4, or may be divided into figures other than a square, such as a rectangle or a diamond. Absent.

Next, the modified image is generated from the basic pattern image based on the distance between the gazing points set in the sub-pixel unit as shown in FIG. 5, not in the pixel unit as in the conventional method. For example, in FIG. 5, when the basic length is 80 pixels, the distances L1, L2, L3 between the gazing points are 79.75 pixels. As described above, according to the present embodiment, the distance between gazing points can be controlled in subpixel units, for example, in 0.25 pixel units. Then, the first modified image is generated based on the basic pattern image and the distance between the gazing points in subpixel units (for example, the image information of the subpixel S2 is located at a position separated from the S2 by the distance L1 between the gazing points). (It becomes the same as the image information of a certain sub-pixel S1).

Similarly, the Nth (N is an integer) modified image is generated based on the (N-1) th modified image (or basic pattern image) and the distance between the gazing points in subpixel units. . As described above, according to the present embodiment, since the distance between the gazing points is in units of sub-pixels, a stereoscopic image that produces a more accurate and smooth virtual image having a tilted shape can be obtained as compared with the conventional example. That is, the distance to the virtual image, which can be changed only by one unit in the conventional example, can be changed by, for example, 0.25 unit in the present embodiment, which makes the conventional example look like a staircase (plural discs). The resulting image (Fig. 6
(A)), it can look smooth (Fig. 6).
(B)). As a result, the image quality can be significantly improved.

In the present embodiment, the image information (color, brightness) of the sub-pixels in one pixel are different from each other in many cases as shown by P2 and P4 in FIG.
However, the image information obtained according to this embodiment needs to be displayed on a display device having a finite number of pixels, and thus needs to be returned to pixel-based information. Therefore, in this embodiment, for example, the average value (weighted average value) of the image information of the sub-pixels within one pixel is obtained and used as the image information of that pixel. In the conventional example, the image information of the pixel at the left eye gazing point is the same as the image information of the pixel at the right eye gazing point, but according to the present embodiment, in many cases, they are different. For example, in FIG. 5, pixel P1 and pixel P
The image information of 2 is different, and P2 is darker. However, even if the image information of the left-eye and right-eye gaze points are different on a pixel-by-pixel basis, they can have the same effect on human vision as if they were the same, and most of the time they have an adverse effect on stereoscopic vision. Absent.

In the above description, the basic pattern image is mainly composed of pixels. However, the present invention is not limited to this.
It may be configured in the unit of sub-pixel as shown in FIG. In this case, when obtaining the final image information, the basic pattern image also requires a process of averaging the image information of the sub-pixels forming each pixel.

(Second Embodiment) The second embodiment is an embodiment for improving the image quality by improving the formation of the basic pattern image.

When the image is generated by the method of the first embodiment, the completed image is composed of the original area and the non-original area as shown in FIG. Here, the original area is an area in which the basic pattern image is simply repeated. For example, in FIG. 1, all the depth values of the area of the first modified image are 0.
, The first modified image is the same as the basic pattern image. Therefore, in this case, the areas of the basic pattern image and the first modified image are both original areas. On the other hand, if a display object such as a cube is present in the area of the second modified image, the second modified image is different from the basic pattern image, so that part or all of this area is a non-original area.

When an image in which the original area and the non-original area are mixed is displayed on a display device in which the γ correction is not performed correctly, a difference in brightness between the original area and the non-original area occurs and the image quality deteriorates. The problem arises. The reason will be described below.

In a display device such as a CRT, the display brightness of a pixel on the screen is not proportional to the input value for that pixel.
It has the characteristics shown in FIG. Therefore, normally, FIG.
As shown in (B), the correction processing is performed so that the display brightness of the pixel is proportional to the input value. This correction process is called γ correction. There is individual difference in the relationship between the input value and the display brightness, and there is also a change over time. Therefore, the γ correction of the display device is not always performed correctly. For example, when the input value / display brightness curve is convex upward (V in FIG. 10A) or convex downward (FIG. 10 (A) W) can occur. For example,
Now, consider a case where the input value / display brightness curve is convex upward. Also, consider a case where the basic pattern image is not formed in subpixel units (see FIG. 7) but in pixel units. In this case, in the original area (area of the basic pattern image and the same image as this), the process of averaging the image information of the sub-pixels is not performed, and the image information of the pixel remains the original image information. Become. On the other hand, in the non-original area, as described in the first embodiment, the process of averaging the image information of the sub-pixels is performed, and the image information of the pixel is in a state in which a plurality of image information are mixed. ing.

For example, in the pixel P2 of FIG. 5, assuming that the image information having a darker display luminance is C1 and the image information having a brighter display is C2, there are four sub-pixels of C1 and twelve sub-pixels of C2. . Therefore, assuming that the image information of the pixel P2 is C3 and the display brightness of the display device for the image information C1, C2, and C3 is b1, b2, and b3, respectively, b3 = (4 · b1 + 12 · b2) / 16 should be obtained. This is n = in FIG.
12, corresponding to the case of m = 4. That is, the display brightness of the display device must be b3 shown in FIG.
However, at this time, if the γ correction of the display device is not correctly performed and the input value / display brightness curve is convex upward (in the case of V), the display brightness of the display device is b4 instead of b3, The display will be bright. Conversely, when the input value / display brightness curve is convex downward (in the case of W), the display is dark.

On the other hand, in the original area, as shown in the basic pattern image of FIG. 5, since the same image information is contained in all the pixels, the above-mentioned change in brightness does not occur. For example, in the original area, the number of pixels of C1 is 4
When there are twelve C2 pixels, C1 on the display device
The pixel of is displayed with the display brightness of b1, and the pixel of C2 is displayed with the display brightness of b2. Therefore, the human eye has a mixture of these display luminances b1 and b2 in a ratio of 4:12, that is, in FIG.
The display brightness of b3 in (B) is felt. On the other hand, the display brightness of b4 is output from the pixel P2 in the non-original area, so that the non-original area has a brighter display.

In the present embodiment, in order to solve the above problem, as shown in FIG. 11, the basic pattern image is set so that the size of the area where the image information is the same is a non-integer multiple of the pixel size. To generate. In the example of FIG. 11, the size of the same image information area is 1.25P × 1.25P (P is the length of one side of the pixel).
Which is a non-integer multiple of the pixel size. This allows
The image information is mixed not only in the non-original area but also in the original area, and both are equally affected by the change in display luminance due to the mixing. As a result, there is no difference in display brightness between the original area and the non-original area, and the image quality can be improved.

If the basic pattern image is formed so that the same image information area always extends over the pixel area as shown in FIG. 7, the same pixel information area does not necessarily have to be a non-integer multiple size.

The present invention is not limited to the first and second embodiments described above, and various modifications can be made within the scope of the present invention.

For example, in the above-mentioned embodiment, the explanation has been given by mainly taking RDS as an example, but the present invention can be applied not only to RDS but also to other stereoscopic image information generating methods such as a color field stereogram. Here, in the color field stereogram, a basic pattern image in which a pattern or the like of a predetermined shape is drawn in pixel units is used. At this time, in the present invention, it is also possible to draw the basic pattern image in subpixel units. In addition to RDS and color field stereogram, stereoscopic vision of a method of determining the image information of the right eye (or left eye) gazing point based on at least the image information of the left eye (or right eye) gazing point and the distance between the gazing points. The present invention can be applied to any use image information generation method. In this case, the distance between the gazing points is set in sub-pixel units, and the image information of the right-eye (or left-eye) gazing point obtained in sub-pixel units is converted into image information in pixel units. The effect of can be obtained.

Further, in the above embodiment, the method of obtaining the average value when converting the image information in the sub-pixel unit into the image information in the pixel unit is adopted. However, the present invention is not limited to this, and various methods such as performing γ correction together at the time of these conversions can be adopted.

Further, the image information generating method of the present invention has a particularly great effect when the obtained image information is displayed on a display device having a finite number of pixels, but it has other effective applications. For example, it is used to generate image information by the method of the present invention in a personal computer or the like, or to deliver the generated image information by communication (personal computer communication or the like). When image information is generated on a computer, characteristics such as a bitmap memory for image display are often used. In such a case, due to the properties of the bitmap memory and the like, there is a restriction that the finally generated image information must be in pixel units. In addition, when the image information is delivered by communication or the like, it is necessary to reduce the data amount of the image information, which causes a restriction that the finally generated image information must be in a predetermined unit, for example, a pixel unit. According to the present invention, it is possible to provide a high quality stereoscopic image even under such constraints.

Further, according to the present invention, it is possible to express a moving image by the generated image information. When a moving image is represented by a conventional method, a stepped shape as shown in FIG.
Although it may disappear, the present invention can prevent such a situation.

[0049]

According to the present invention, since the distance between gazing points can be controlled in units of sub-pixels, an accurate sense of depth can be expressed, and a stereoscopic image for generating a virtual image having a smooth slope shape can be generated. This can significantly improve the quality of the image obtained. Further, according to the present invention, the image information in pixel units of the left eye and the right eye gazing point may be different, but it is possible to give the same effect to human vision as when these are the same. Has almost no adverse effect on vision.

Further, according to the present invention, even for an image display device or the like in which the γ correction is not correctly performed, it is possible to display an image with a uniform brightness as a whole, and further improve the quality of the obtained image. it can.

[0051]

[Brief description of drawings]

FIG. 1 is a diagram showing an example of an image obtained by the present invention.

FIG. 2 is a diagram for explaining three-dimensional shape and depth information necessary for image generation.

FIG. 3 is a diagram for explaining an RDS method.

FIG. 4 is a diagram for explaining the relationship between pixels and sub-pixels.

FIG. 5 is a diagram for explaining an image information generating method according to the first embodiment.

6A and 6B are diagrams for explaining the problems of the conventional method.

FIG. 7 is a diagram for explaining a basic pattern image configured in subpixel units.

FIG. 8 is a diagram showing an example of an arrangement of original areas and non-original areas.

9A and 9B are diagrams for explaining γ correction.

10A and 10B are diagrams for explaining a problem that occurs when an image is displayed on a display device in which γ correction is not performed correctly.

FIG. 11 is a diagram showing an example of a basic pattern image generated in the second embodiment.

12A and 12B are diagrams for explaining the crossing method and the parallel method.

[Explanation of symbols]

 10 spheres 12 cubes 14 walls

Claims (11)

[Claims] 1. Stereoscopic viewing is performed based on one of the left-eye and right-eye gazing point image information and the distance between the gazing points whose size is determined by the depth information, and the other gazing point image information different from the one. An image information generating method for generating possible image information in pixel units, wherein the one gazing point image information in sub-pixel units and the inter-gazing point distance set in sub-pixel units And a step of obtaining image information in pixel units from the other gazing point image information in subpixel units. 2. An image for forming a plurality of adjoining modified image information to generate image information in a stereoscopically visible pixel unit based on basic pattern image information and a distance between fixation points whose size is determined by depth information. An information generating method, comprising: converting the basic pattern image information in pixel units into image information in subpixel units; basic pattern image information in subpixel units; a (N-1) th modified image in subpixel units A step of generating Nth modified image information based on at least one of the information (N is an integer) and the distance between gazing points set in subpixel units; and the obtained modified image information in subpixel units. And a step of obtaining image information in pixel units from the image information generation method. 3. The image information for each pixel according to claim 1, wherein in the step of obtaining the image information for each pixel, an average value of image information of sub-pixels included in each pixel is set as the image information for each pixel. Characteristic image information generation method. 4. The basic pattern image information according to claim 2, wherein the basic pattern image information is composed of image information in subpixel units, and in the step of obtaining the basic pattern image information in pixel units, An image information generating method characterized by obtaining image information in pixel units from basic pattern image information. 5. The image information generation method according to claim 2, wherein the basic pattern image information is formed by randomly arranging images in pixel units or subpixel units. 6. The image information generation method according to claim 2, wherein the basic pattern image information is formed by drawing a pattern of a predetermined shape in pixel units or sub-pixel units. 7. The basic pattern image information according to any one of claims 4 to 6, wherein the basic pattern image information is formed such that at least one of a vertical dimension and a horizontal dimension of regions where the image information is the same is a non-integer multiple of a pixel dimension. A method for generating image information, characterized in that: 8. The image information generating method according to claim 4, wherein the basic pattern image information is formed such that an area where the image information is the same always extends over a pixel boundary. 9. An image display method, wherein the image information generated by the image information generation method according to claim 1 is displayed on a display device having a finite number of pixels. 10. The image display method according to claim 9, wherein the image information of the moving image is displayed on the display device. 11. Stereoscopic viewing by obtaining one of the other gaze point image information for the left eye and the right eye, and the other gaze point image information different from the one point based on the distance between the gaze points whose size is determined by the depth information. An image display system for generating possible pixel-unit image information and displaying it on a display device having a finite number of pixels, wherein one of the gazing point image information in sub-pixel units and a sub-pixel unit is set. A means for obtaining the other gazing point image information in sub-pixel units based on an inter-viewpoint distance, and a means for obtaining image information in pixel units from the other gazing point image information in sub-pixel units Image display system.